panic(cpu 6 caller 0xffffff8006aa389b): userspace watchdog timeout: no successful  
checkins from logd (0 induced crashes) in 120 seconds
service returned not alive with context : unresponsive dispatch queue(s): com.apple.firehose.io-wl 
logd has not exited since first loaded
service: logd, total successful checkins in 14849 seconds: 1265, last successful checkin: 120 seconds ago
service: WindowServer, total successful checkins in 14811 seconds: 1283, last successful checkin: 0 seconds ago
service: remoted, total successful checkins in 14849 seconds: 1285, last successful checkin: 0 seconds ago
service: opendirectoryd, total successful checkins in 14849 seconds: 1287, last successful checkin: 0 seconds ago
service: configd, total successful checkins in 14849 seconds: 1287, last successful checkin: 0 seconds ago

Panicked task 0xffffffa354d65980: 4 threads: pid 134: watchdogd
Backtrace (CPU 6), panicked thread: 0xffffffacee465598, Frame : Return Address
0xffffff91552eb510 : 0xffffff8003bd9511 
0xffffff91552eb560 : 0xffffff8003d4cc16 
0xffffff91552eb5a0 : 0xffffff8003d3bdac 
0xffffff91552eb660 : 0xffffff8003b6e971 
0xffffff91552eb680 : 0xffffff8003bd9807 
0xffffff91552eb780 : 0xffffff8003bd8e8b 
0xffffff91552eb7f0 : 0xffffff80043cdcc7 
0xffffff91552eb8e0 : 0xffffff8006aa389b 
0xffffff91552eb8f0 : 0xffffff8006aa3360 
0xffffff91552eb910 : 0xffffff8006aa2465 
0xffffff91552eba40 : 0xffffff8004339cd9 
0xffffff91552eba70 : 0xffffff800433a03d 
0xffffff91552ebbe0 : 0xffffff8003cf032c 
0xffffff91552ebd00 : 0xffffff8003bb604c 
0xffffff91552ebda0 : 0xffffff8003bc8ec7 
0xffffff91552ebdf0 : 0xffffff8003bc955a 
0xffffff91552ebee0 : 0xffffff8003d1fdf4 
0xffffff91552ebfa0 : 0xffffff8003b6edd6 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[E9B43EE8-9D14-3295-8764-06BF73572D8D]@0xffffff8006aa1000->0xffffff8006aa3fff

Process name corresponding to current thread (0xffffffacee465598): watchdogd